JPH022344B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of informing all conference participants of the position of a speaker's seat in a public address system for a conference hall, which is capable of informing a large number of conference participants of the position of the speaker's seat. be.

Conventionally, when holding a conference between a large number of conference participants using a conference hall public address system in which a microphone and speaker are placed at each conference seat, the amplified sound from the speaker's microphone is transmitted to many conference seats. However, the microphone at the speaker's seat causes howling due to the amplified sound of the speaker from the speaker's seat and the speakers around the speaker's seat. To prevent this feedback, the speakers at the speaker's seat and the conference seats surrounding the speaker's seat are turned off or the volume of the speakers is reduced to prevent howling. The amplified sound from the microphones at the conference seats was amplified at a constant volume from the many speakers at the conference seats.

Therefore, although the amplified sound from the speaker's seat is audible to all meeting participants, there is a problem in that many meeting participants cannot clearly recognize the position of the speaker's seat.

The present invention has been made in order to solve the above-mentioned conventional problem, and the amplified sound of the speaker is transmitted from the microphone of the speaker's seat to the speaker's seat and the first outer periphery surrounding the speaker's seat centered on the speaker's seat. Each speaker in the conference seats located on the second outer periphery is set to small, each speaker in the conference seats located on the second outer periphery is set to large, and each speaker in the other conference seats is set to medium. The purpose of the present invention is to provide a method for informing all conference participants of the speaker seat position in a new conference hall public address system that controls the speaker volume of the speaker and informs all conference participants of the speaker seat position. That is.

The present invention will be explained below with reference to the drawings. FIG. 1 is a schematic configuration diagram of an embodiment of a conference hall loudspeaker system for explaining the present invention, in which M ₁₁ to _{M 1} n, M ₂₁ to _{M 2} n...Mm ₁ to
Mmn are conference room microphones, S ₁₁ to S ₁ n,
S ₂₁ ~ S ₂ n...Sm ₁ ~ Smn are microphone selection switch circuits, P ₁₁ ~ _{P 1} n, P ₂₁ ~ _{P 2} n... Pm ₁ ~ Pmm are conference seat speakers, A ₁₁ ~ _{A 1} n, A ₂₁ 〜A ₂ n…Am ₁ 〜
Amn is an amplifier with volume control, 10 is a booster amplifier, 11 is a microphone selection panel, 12 is I/O for microphone selection input/output, 13 is I/O for control signal input/output, 14 is a control device, 15 is all conference participants A ROM 16 stores fixed data and a control program regarding the arrangement of the microphones and speakers at the seat and the arrangement of the volume level of each speaker when each microphone is used as the microphone at the speaker's seat. This is a RAM that rearranges the arrangement of the volume levels of the speakers at each conference seat, centering on the speaker at the seat.

That is, as is clear from the arrangement diagram of the microphones and speakers at the conference seats in the conference hall shown in Figure 2, each conference seat has one microphone and one speaker, for example, in the first row. A microphone M ₁₁ and a speaker P ₁₁ are arranged at the first conference seat, respectively. In this case, for example, microphone selection switch circuit S ₁₁ is connected to microphone M ₁₁ , and amplifier with volume control A ₁₁ is connected to speaker P ₁₁ , and these microphone selection switch circuit S ₁₁ and amplifier with volume control A ₁₁ are connected. are connected via the booster amplifier 10, so that each of the microphones _M12 to Mmn at each conference seat is connected to a corresponding microphone selection switch circuit.
Each of the speakers _S12 to Smn and each of the speakers _P12 to Pmn are connected to the corresponding amplifiers with volume control _P12 to Amn, respectively, and these microphone selection switch circuits _S12 to Smn and the amplifiers with volume control _A12 to Amn
are connected via the booster amplifier 10 mentioned above.

Also, amplifiers with volume control A ₁₁ ~A ₁ n, A ₂₁ ~ _{A 2} n...
Am ₁ ~ Amn, microphone selection switch circuit S ₁₁
~ _S1n , _S21 ~ _S2n ... _Sm1 ~Smn are each selected and operated by a control signal from the control circuit 14 via the control signal input/output I/O 13.

Next, regarding the operation of making the location of the speaker's seat known to all conference participants using the conference hall loudspeaker system configured in this way, the fourth conference participant in the fifth row of conference seats uses the microphone M _45. Let's take as an example the case where you make a statement.

When the switch corresponding to the microphone M ₄₅ at the speaker's seat on the microphone selection board 11 is pressed, the microphone number of the microphone M ₄₅ is transmitted to the control device 14 via the microphone selection input/output I/O 12 .

The control device 14 reads the arrangement status of microphones and speakers at all conference seats from the ROM 15,
Based on the speaker's microphone number received earlier,
As shown in FIG. 2, the speaker P ₄₅ at the speaker's seat and the speakers P ₃₄ , P ₃₅ , P ₃₆ , and speakers at the conference seat located on the first outer periphery surrounding the speaker's seat centering on the speaker's seat, as shown in FIG.
The volume of P ₄₄ , P ₄₆ , P ₅₄ , P ₅₅ , P ₅₆ is reduced, and the speakers P ₂₃ , P ₂₄ , of the conference seats located on the second outer periphery are
P ₂₅ , P ₂₆ , P ₂₇ , P ₃₃ , P ₃₇ , P ₄₃ , P ₄₇ , P ₅₃ , P ₅₇ ,
A control table is set for increasing the volume of P ₆₃ , P ₆₄ , P ₆₅ , P ₆₆ , and P ₆₇ and increasing the volume of the speakers at the other conference seats.

A control table is also set up to operate the microphone M ₄₅ at the caller's seat.

The control tables for the speakers and microphones set in this way are stored in the RAM 16 mentioned above.
It is created based on the volume level arrangement state of each speaker of the conference seats and other conference seats located on the first and second outer peripheries surrounding the speaker's seat speaker, read out from the ROM 15 and edited.

Next, the control device 14 has an I/O for control signal input/output.
Microphone selection switch circuit S ₄₅ sends a control signal to operate the microphone M ₄₅ at the speaker's seat from 13.
In addition, the speaker P ₄₅ in the speaker's seat and the speakers P ₃₄ , P ₃₅ , P ₃₆ , P ₄₄ , in the conference seats surrounding the speaker's seat
Amplifiers with volume control A ₃₄ , A _{35 , A 36 , A 44 , A 45} ,
Similarly, speakers P ₂₃ , A ₄₆ , A ₅₄ , A ₅₅ , A ₅₆ ,
P ₂₄ , P ₂₅ , P ₂₆ , P ₂₇ , P ₃₃ , P ₃₇ , P ₄₃ , P ₄₇ , P ₅₃ ,
Each control signal that increases the volume of P ₅₇ , P ₆₃ , P ₆₄ , P ₆₅ , P ₆₆ , P ₆₇ is sent to an amplifier with volume control A ₂₃ , A ₂₄ , A ₂₅ ,
A ₂₆ , A ₂₇ , A ₃₃ , A ₃₇ , A ₄₃ , A ₄₇ , A ₅₃ , A ₅₇ ,
Control signals for controlling the volume of speakers at conference seats other than these are sent to the corresponding amplifiers with volume control to A ₆₃ , A ₆₄ , A ₆₅ , A ₆₆ , and A ₆₇ .

As a result, the sound from the microphone M ₄₅ at the speaker's seat is transmitted to the microphone selection switch circuit S ₄₅ ,
Booster amplifier 10 and amplifier with volume control A ₁₁
~A ₁ n, A ₂₁ ~A ₂ n...Am ₁ ~ Via the speakers P ₃₄ , P ₃₅ , P ₃₆ , P 44 , P ₄₅ , _{P 46 ,} P ₅₄ , P ₅₅ ,
When the volume of P ₅₆ is low, the speakers P ₂₃ , P ₂₄ , P ₂₅ , P ₂₆ ,
P ₂₇ , P ₃₃ , P ₃₇ , P ₄₃ , P ₄₇ , P ₅₃ , P ₅₇ , P ₆₃ , P ₆₄ ,
The volumes of P ₆₅ , P ₆₆ , and P ₆₇ are controlled to high, and the volumes of the other speakers are controlled to medium. In this case, the volume of each speaker is adjusted to a level that does not cause howling, and the output level of each speaker and the howling state value in the conference hall are
It is written to the ROM 15 and revised.

Therefore, each speaker P ₁₁ at each conference seat in the conference hall
~P ₁ n, P ₂₁ ~P ₂ n...Pm ₁ ~Pmn Although the volume of the speakers surrounding the speaker's seat with the speaker's seat in the center is small, the speakers surrounding the speaker with this small volume has a high volume, and many other speakers surrounding the high volume speaker have a medium volume, forming a donut shape.

Therefore, each conference participant can know the speaker's location by knowing that the speaker is located at a location where the volume of the speaker is loud.

As described above, according to the present invention, there is an advantage that the position of the speaker's seat in the conference hall can be easily recognized from the perspective of each conference member because the speaker's amplified sound is heard from an area at a higher level. .

[Brief explanation of the drawing]

FIGS. 1 and 2 are a schematic diagram of an embodiment of a conference hall loudspeaker system for explaining the present invention, and an arrangement diagram of microphones and speakers at conference seats in the conference hall. _M11 ~ _M1n , _{M21~ M2n} ... _Mm1 ~Mmn: Conference microphone, _P11 ~ _P1n , _P21 ~ _P2n ... _Pm1
~Pmn: Conference speaker, S ₁₁ ~S ₁ n, P ₂₁ ~S ₂ n
...Sm ₁ ~Smn: Microphone selection switch circuit,
A ₁₁ ~ _{A 1} n, A ₂₁ ~A ₂ n...Am ₁ ~Amn: Amplifier with volume control, 10: Booster amplifier, 11: Microphone selection panel, 12: I/O for microphone selection input/output, 13: Control signal I/O for input/output, 14:
Control circuit, 15: ROM, 16: RAM.

Claims (1)

[Claims] 1. One microphone connected to one microphone selection switch circuit and one speaker connected to one amplifier with volume control are installed at each conference seat, and In the conference hall public address system configured in such a manner that the microphone selection switch circuit and the amplifier with volume control of each conference seat are connected via one booster amplifier, any speaker at the conference seat Microphone selection means for selecting a microphone at a seat to operate; and control for receiving microphone number information selected by the microphone selection means and selectively controlling operation or non-operation of the amplifier with volume control and the microphone selection switch circuit. and storage means for storing the arrangement state of each conference seat with an arbitrary speaker's seat as the center, and the control means receives microphone number information of the speaker's seat selected by the microphone selection means. reads out the arrangement state of the microphones and speakers at each conference seat centered on the speaker's seat from the storage means, puts only the microphone at the speaker's seat into an operating state, and records the volume of the speaker at the speaker's seat and the above-mentioned speech. The volume of each speaker of the conference seats located on the first outer periphery surrounding the speaker's seat with the speaker's seat as the center is decreased, and the volume of each speaker of the conference seats located on the second outer periphery is increased. For a conference hall, characterized in that the microphone selection switch circuit and the amplifier with volume control are operated so that the volume of each speaker at the speaker's seat is medium, and the position of the speaker's seat is notified to all conference participants. A method of informing all conference participants of the speaker's seat position in a public address system.